Spring pin type radial well guider layer changing device

A guider and radial well technology, applied in directional drilling, drilling with liquid/gas jets, etc., can solve problems such as high cost, labor and time consumption, and save time, reduce labor, and reduce construction costs.

Pending Publication Date: 2022-07-19
CHINA PETROLEUM & CHEM CORP +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drilling radial wells in multiple layers in different directions in a single well consumes a lot of manpowe

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spring pin type radial well guider layer changing device
  • Spring pin type radial well guider layer changing device
  • Spring pin type radial well guider layer changing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. Also, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

[0039] figure 1 A spring-pin radial well guide layer changing device according to an embodiment of the present invention is schematically shown, including a guide outer pipe 1 and a tool string 2 . The guide outer pipe 1 includes an oil pipe, a multi-stage layer changer connected below the oil pipe, and a guide 17 connected at the lower end of the multi-stage layer changer. The tool string 2 passes through the outer guide tube 1 and protrudes along the radial di...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The spring pin type radial well guider layer changing device comprises a guiding outer pipe, and the guiding outer pipe comprises an oil pipe, a multi-stage layer changing device connected to the lower portion of the oil pipe and a guider connected to the lower end of the multi-stage layer changing device; the tool string penetrates through the guide outer pipe and extends out of the guide outer pipe in the radial direction to crush rocks; wherein the multi-stage layer changing device is constructed to be capable of extending stage by stage under the pressure action of the tool string, so that the guider is moved to different positions, and layer changing is completed. Reversing of one-time drilling of the radial well can be achieved, time is saved, labor of workers is relieved, and construction cost is reduced.

Description

technical field [0001] The invention relates to a spring pin type radial well guide layer changing device, which belongs to the field of hydraulic jet radial wells of oil and gas wells. Background technique [0002] With the rapid development of my country's economy, the situation of my country's oil and gas resources has become increasingly severe. In 2017, the apparent consumption of oil was estimated to be 588 million tons, and the external dependence reached 67.4%. The problem of energy strategic security is prominent. After decades of development, my country's old oil fields have generally entered the development stage of "double high" (high recovery degree, high water cut), and a large amount of remaining oil remains in the ground due to the heterogeneity and low quality of the reservoir, which is difficult to exploit. . But judging from the current production, 70% of China's oil production still comes from old oil fields, and its remaining recoverable reserves are sti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B7/04E21B7/18
CPCE21B7/046E21B7/18
Inventor 马国锐万小勇张杰吴春洪杜春朝邹宁陶杉李林涛苏鹏宋海黄知娟
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap